Title: Green Functions for Black Hole Spacetimes: Wave Propagation, Self-Force, Stability and Quantum Properties Abstract: Field perturbations of black hole spacetimes satisfy a wave equation, for which crucial objects are its classical (e.g., retarded) and quantum (e.g., Feynman)… Read More
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Posted: 25th April 2024 by George Rogers
Jerome Quintin (Univ. Of Waterloo & Perimeter Institute)
Title: Recent Developments in Quantum Cosmology Abstract: After a brief overview of the concepts behind quantum cosmology, with an emphasis on the no-boundary proposal for the very early universe, I will present the Kontsevich-Segal criterion. Kontsevich and Segal have… Read More
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Last Updated: 18th April 2024 by George Rogers
Marcel Merk (Nikhef, Amsterdam)
Title: Flavour Puzzles and the LHCb Experiment Abstract: Why is there no antimatter in the universe and why does nature provide us with three generations of similar fundamental fermions? These so-called flavour puzzles are among the most intriguing… Read More
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Last Updated: 18th April 2024 by George Rogers
Francesca Vidotto (Western University, Ontario)
Title: Covariant Loop Quantum Gravity and Cosmology Abstract: The covariant formulation of Loop Quantum Gravity dynamics, referred also as Spinfoam, provides currently the most complete formulation for a non-perturbative theory of quantum gravity. It is a formulation of the gravitational path integral as a… Read More
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Posted: 10th April 2024 by George Rogers
Francesca Vidotto (Western University, Ontario)
Title: Covariant Loop Quantum Gravity and Cosmology Abstract: The covariant formulation of Loop Quantum Gravity dynamics, referred also as Spinfoam, provides currently the most complete formulation for a non-perturbative theory of quantum gravity. It is a formulation of the gravitational path integral as a… Read More
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Last Updated: 4th April 2024 by George Rogers
Alfonso Garmendia (I’Institut d’Estudis Catalans, Barcelona)
Title: Frame PB-groupoid of a VB-groupoid Abstract: Principal bundles are essential objects in gauge theories. A basic example of a principal bundle is the frames (or pointwise ordered basis) of a vector bundle on a manifold. Using this… Read More
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Last Updated: 4th April 2024 by George Rogers
Keith Glennon (Okinawa Institute of Science & Technology)
Title: An Overview of the E11 Program Abstract: We will discuss the claim that the low energy effective action of the theory of strings and branes possesses an E11 Kac-Moody symmetry. We will show that a certain non-linear realization… Read More
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Last Updated: 25th March 2024 by George Rogers
Veronica Sanz (University of Valencia)
Title: New Physics: Where Do We Stand? Abstract: This talk will be a discussion of our long-standing search for new phenomena in High-Energy Physics. We will describe the current situation, a decade after the Higgs discovery, and talk… Read More
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Last Updated: 25th March 2024 by George Rogers
Achim Kempf (University of Waterloo & Perimeter Institute)
Title: Correlations, Representations and the Emergence of Spacetime Abstract: There are reasons to expect that spacetime might change dimension at sufficiently high energies or at least that, at energies as high as the Planck scale, spacetime might emerge from an essentially non-geometric structure. The… Read More
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Last Updated: 7th March 2024 by George Rogers
Susha Parameswaran (University of Liverpool)
Title: Dark Energy with a Little Help from its Friends (and why it might need somebody) Abstract: I will give a (somewhat biased) overview of the current ideas for Dark Energy in String Theory; the insights they hope… Read More
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Last Updated: 7th March 2024 by George Rogers
Marc Casals (University of Leipzig)
Title: Green Functions for Black Hole Spacetimes: Wave Propagation, Self-Force, Stability and Quantum Properties Abstract: Field perturbations of black hole spacetimes satisfy a wave equation, for which crucial objects are its classical (e.g., retarded) and quantum (e.g., Feynman)… Read More
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